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<h1>TLVCreator.h</h1><a href="TLVCreator_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright 2007 Baylor University</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</span>
<a name="l00005"></a>00005 <span class="comment"> * you may not use this file except in compliance with the License.</span>
<a name="l00006"></a>00006 <span class="comment"> * You may obtain a copy of the License at</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * Unless required by applicable law or agreed to in writing, software</span>
<a name="l00011"></a>00011 <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
<a name="l00012"></a>00012 <span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
<a name="l00013"></a>00013 <span class="comment"> * See the License for the specific language governing permissions and</span>
<a name="l00014"></a>00014 <span class="comment"> * limitations under the License.</span>
<a name="l00015"></a>00015 <span class="comment"> */</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#ifndef _PROPHET_TLV_CREATOR_H_</span>
<a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define _PROPHET_TLV_CREATOR_H_</span>
<a name="l00019"></a>00019 <span class="preprocessor"></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="Table_8h.html">Table.h</a>"</span>
<a name="l00021"></a>00021 <span class="preprocessor">#include "<a class="code" href="BundleCore_8h.html">BundleCore.h</a>"</span>
<a name="l00022"></a>00022 <span class="preprocessor">#include "BundleList.h"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "Dictionary.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="RIBDTLV_8h.html">RIBDTLV.h</a>"</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="RIBTLV_8h.html">RIBTLV.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="OfferTLV_8h.html">OfferTLV.h</a>"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include "<a class="code" href="BundleTLVEntryList_8h.html">BundleTLVEntryList.h</a>"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "<a class="code" href="BundleOffer_8h.html">BundleOffer.h</a>"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="Oracle_8h.html">Oracle.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <string></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keyword">namespace </span>prophet
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">struct </span>TLVCreator
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 <span class="keyword">static</span> RIBDTLV* ribd(BundleCore* core,
<a name="l00038"></a>00038 <span class="keyword">const</span> Table* nodes,
<a name="l00039"></a>00039 <span class="keyword">const</span> std::string& sender,
<a name="l00040"></a>00040 <span class="keyword">const</span> std::string& receiver)
<a name="l00041"></a>00041 {
<a name="l00042"></a>00042 <span class="comment">// reject the oddball</span>
<a name="l00043"></a>00043 <span class="keywordflow">if</span> (core == NULL || nodes == NULL) <span class="keywordflow">return</span> NULL;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 Dictionary ribd(sender,receiver);
<a name="l00046"></a>00046 <span class="keywordflow">for</span> (<a class="code" href="classprophet_1_1Table.html#a2f4bc33f615e318215dc60b48447a5d">Table::const_iterator</a> i = nodes->begin(); i != nodes->end(); i++)
<a name="l00047"></a>00047 {
<a name="l00048"></a>00048 <span class="comment">// grab the route from the iterator</span>
<a name="l00049"></a>00049 std::string dest = i->first;
<a name="l00050"></a>00050 std::string eid = core->get_route(dest);
<a name="l00051"></a>00051 <span class="comment">// attempt to insert, fail out if unsuccessful</span>
<a name="l00052"></a>00052 <span class="keywordflow">if</span> (ribd.insert(eid) == <a class="code" href="classprophet_1_1Dictionary.html#bb335d818c777bf393a25cbbd0661679" title="Reserve 0xffff for in-band error signal.">Dictionary::INVALID_SID</a> &&
<a name="l00053"></a>00053 ribd.find(eid) == <a class="code" href="classprophet_1_1Dictionary.html#bb335d818c777bf393a25cbbd0661679" title="Reserve 0xffff for in-band error signal.">Dictionary::INVALID_SID</a>) <span class="keywordflow">return</span> NULL;
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056 ribd.dump(core,__FILE__,__LINE__);
<a name="l00057"></a>00057 <span class="keywordflow">return</span> <span class="keyword">new</span> RIBDTLV(ribd);
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keyword">static</span> RIBTLV* rib(Oracle* oracle,
<a name="l00061"></a>00061 <span class="keyword">const</span> Dictionary& ribd,
<a name="l00062"></a>00062 <span class="keywordtype">bool</span> relay_node,
<a name="l00063"></a>00063 <span class="keywordtype">bool</span> accept_custody,
<a name="l00064"></a>00064 <span class="keywordtype">bool</span> internet_gw = <span class="keyword">false</span>)
<a name="l00065"></a>00065 {
<a name="l00066"></a>00066 <span class="comment">// reject the oddball</span>
<a name="l00067"></a>00067 <span class="keywordflow">if</span> (oracle == NULL) <span class="keywordflow">return</span> NULL;
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="keyword">const</span> Table* nodes = oracle->nodes();
<a name="l00070"></a>00070 std::string sender = ribd.find(0);
<a name="l00071"></a>00071 std::string receiver = ribd.find(1);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <a class="code" href="namespaceprophet.html#85efb86d8e405350d5ac3236c15e4be5">RIBNodeList</a> list;
<a name="l00074"></a>00074 <span class="keywordflow">for</span> (<a class="code" href="classprophet_1_1Table.html#a2f4bc33f615e318215dc60b48447a5d">Table::const_iterator</a> i = nodes->begin(); i != nodes->end(); i++)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <span class="keyword">const</span> std::string eid = i->first;
<a name="l00077"></a>00077 <span class="keywordflow">if</span> (eid == sender || eid == receiver) <span class="keywordflow">continue</span>;
<a name="l00078"></a>00078 <span class="keyword">const</span> Node* n = i->second;
<a name="l00079"></a>00079 u_int16_t sid = ribd.find(eid);
<a name="l00080"></a>00080 <span class="keywordflow">if</span> (sid == <a class="code" href="classprophet_1_1Dictionary.html#bb335d818c777bf393a25cbbd0661679" title="Reserve 0xffff for in-band error signal.">Dictionary::INVALID_SID</a>)
<a name="l00081"></a>00081 <span class="keywordflow">return</span> NULL; <span class="comment">// log error?</span>
<a name="l00082"></a>00082 oracle->core()->print_log(<span class="stringliteral">"rib"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00083"></a>00083 <span class="stringliteral">"%s (%u) -> %.2f"</span>,eid.c_str(),sid,n->p_value());
<a name="l00084"></a>00084 list.push_back(<span class="keyword">new</span> RIBNode(n,sid));
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087 ribd.dump(oracle->core(),__FILE__,__LINE__);
<a name="l00088"></a>00088 <span class="keywordflow">return</span> <span class="keyword">new</span> RIBTLV(list,relay_node,accept_custody,internet_gw);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">static</span> OfferTLV* offer(Oracle* oracle,
<a name="l00092"></a>00092 <span class="keyword">const</span> Link* nexthop,
<a name="l00093"></a>00093 <span class="keyword">const</span> Dictionary& ribd,
<a name="l00094"></a>00094 <span class="keyword">const</span> Table& remote)
<a name="l00095"></a>00095 {
<a name="l00096"></a>00096 <span class="comment">// reject the oddball</span>
<a name="l00097"></a>00097 <span class="keywordflow">if</span> (oracle == NULL) <span class="keywordflow">return</span> NULL;
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">// create comp</span>
<a name="l00100"></a>00100 FwdStrategyComp* comp = <a class="code" href="structprophet_1_1FwdStrategy.html#923e75aec806ac8dfdb97904e222ae7a" title="Factory method to create instance of appropriate type of comparator.">FwdStrategy::strategy</a>(
<a name="l00101"></a>00101 oracle->params()->fs(),
<a name="l00102"></a>00102 oracle->nodes(),
<a name="l00103"></a>00103 &remote);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="comment">// create decider</span>
<a name="l00106"></a>00106 Decider* d = Decider::decider(
<a name="l00107"></a>00107 oracle->params()->fs(),
<a name="l00108"></a>00108 nexthop,
<a name="l00109"></a>00109 oracle->core(),
<a name="l00110"></a>00110 oracle->nodes(),
<a name="l00111"></a>00111 &remote,
<a name="l00112"></a>00112 oracle->stats(),
<a name="l00113"></a>00113 oracle->params()->max_forward(),
<a name="l00114"></a>00114 oracle->params()->relay_node());
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="comment">// offer's destructor will clean up comp and d</span>
<a name="l00117"></a>00117 BundleOffer offer(oracle->core(),oracle->core()->bundles(),comp,d);
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="comment">// Create a reduced list of ACKs by only tacking on those that </span>
<a name="l00120"></a>00120 <span class="comment">// haven't already been sent</span>
<a name="l00121"></a>00121
<a name="l00122"></a>00122 PointerList<Ack> acklist; <span class="comment">// list of clones from oracle's ACKs</span>
<a name="l00123"></a>00123 AckList acks; <span class="comment">// reduced list to send to get_bundle_offer</span>
<a name="l00124"></a>00124 AckList* link_acks = <span class="keyword">const_cast<</span>Link*<span class="keyword">></span>(nexthop)->acks();
<a name="l00125"></a>00125
<a name="l00126"></a>00126 oracle->acks()->clone(acklist);
<a name="l00127"></a>00127 <span class="keywordflow">for</span>(PointerList<Ack>::iterator i = acklist.begin();
<a name="l00128"></a>00128 i != acklist.end(); i++)
<a name="l00129"></a>00129 {
<a name="l00130"></a>00130 <span class="comment">// returns false if already exists in list (meaning, already sent)</span>
<a name="l00131"></a>00131 <span class="keywordflow">if</span> (link_acks->insert(*i))
<a name="l00132"></a>00132 acks.insert(*i);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a>00135 BundleOfferList list = offer.get_bundle_offer(ribd,&acks);
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="keywordflow">if</span> (list.empty())
<a name="l00138"></a>00138 oracle->core()->print_log(<span class="stringliteral">"offer"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00139"></a>00139 <span class="stringliteral">"empty bundle offer"</span>);
<a name="l00140"></a>00140 <span class="keywordflow">else</span>
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 <span class="keywordflow">for</span> (<a class="code" href="classprophet_1_1BundleEntryList.html#3332c2306c20626dd5e0b9767ac2c378">BundleOfferList::const_iterator</a> i = list.begin();
<a name="l00143"></a>00143 i != list.end(); i++)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145 oracle->core()->print_log(<span class="stringliteral">"offer"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00146"></a>00146 <span class="stringliteral">"%u %u %u %s%s%s"</span>,
<a name="l00147"></a>00147 (*i)->creation_ts(),
<a name="l00148"></a>00148 (*i)->seqno(),
<a name="l00149"></a>00149 (*i)->sid(),
<a name="l00150"></a>00150 (*i)->custody() ? <span class="stringliteral">"C"</span> : <span class="stringliteral">"-"</span>,
<a name="l00151"></a>00151 (*i)->accept() ? <span class="stringliteral">"A"</span> : <span class="stringliteral">"-"</span>,
<a name="l00152"></a>00152 (*i)->ack() ? <span class="stringliteral">"K"</span> : <span class="stringliteral">"-"</span>);
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordflow">return</span> <span class="keyword">new</span> OfferTLV(list);
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="keyword">static</span> ResponseTLV* response(Oracle* oracle,
<a name="l00160"></a>00160 <span class="keyword">const</span> BundleOfferList& offers,
<a name="l00161"></a>00161 BundleResponseList& list,
<a name="l00162"></a>00162 <span class="keyword">const</span> Dictionary& ribd)
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 <span class="comment">// reject the oddball</span>
<a name="l00165"></a>00165 <span class="keywordflow">if</span> (oracle == NULL) <span class="keywordflow">return</span> NULL;
<a name="l00166"></a>00166
<a name="l00167"></a>00167 ribd.dump(oracle->core(),__FILE__,__LINE__);
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="keywordflow">for</span> (<a class="code" href="classprophet_1_1BundleEntryList.html#3332c2306c20626dd5e0b9767ac2c378">BundleOfferList::const_iterator</a> i = offers.begin();
<a name="l00170"></a>00170 i != offers.end(); i++)
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="comment">// pull out the three-way tuple that uniquely identifies bundles</span>
<a name="l00173"></a>00173 u_int32_t cts = (*i)->creation_ts();
<a name="l00174"></a>00174 u_int32_t seq = (*i)->seqno();
<a name="l00175"></a>00175 u_int16_t sid = (*i)->sid();
<a name="l00176"></a>00176 std::string eid = ribd.find(sid);
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="comment">// First delete any ACK'd bundles, and store the ACK</span>
<a name="l00179"></a>00179 <span class="keyword">const</span> Bundle* b = oracle->core()->find(
<a name="l00180"></a>00180 oracle->core()->bundles(),eid,cts,seq);
<a name="l00181"></a>00181 <span class="keywordflow">if</span> ((*i)->ack())
<a name="l00182"></a>00182 {
<a name="l00183"></a>00183 oracle->core()->print_log(<span class="stringliteral">"response"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00184"></a>00184 <span class="stringliteral">"ACK %s %u:%u"</span>,eid.c_str(),cts,seq);
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="keywordflow">if</span> (b != NULL)
<a name="l00187"></a>00187 oracle->ack(b);
<a name="l00188"></a>00188 <span class="keywordflow">else</span>
<a name="l00189"></a>00189 oracle->acks()->insert(eid,cts,seq);
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="comment">// also remember that it came from this link, so as not </span>
<a name="l00192"></a>00192 <span class="comment">// to propagate this ACK over this link again</span>
<a name="l00193"></a>00193
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195 <span class="keywordflow">else</span>
<a name="l00196"></a>00196 <span class="comment">// only request the bundle if not already present in host storage</span>
<a name="l00197"></a>00197 <span class="comment">// and if no ACK exists for the bundle</span>
<a name="l00198"></a>00198 <span class="keywordflow">if</span> (b == NULL)
<a name="l00199"></a>00199 {
<a name="l00200"></a>00200 <span class="comment">// no need to request bundles that have already been delivered</span>
<a name="l00201"></a>00201 <span class="keywordflow">if</span> (oracle->acks()->is_ackd(eid,cts,seq))
<a name="l00202"></a>00202 {
<a name="l00203"></a>00203 oracle->core()->print_log(<span class="stringliteral">"response"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00204"></a>00204 <span class="stringliteral">"not requesting ACK'd bundle: %s %u %u"</span>,
<a name="l00205"></a>00205 eid.c_str(),cts,seq);
<a name="l00206"></a>00206 <span class="keywordflow">continue</span>;
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208
<a name="l00209"></a>00209 <span class="comment">// Logically AND local settings for custody accept with</span>
<a name="l00210"></a>00210 <span class="comment">// remote's request for custody transfer</span>
<a name="l00211"></a>00211 <span class="keywordtype">bool</span> <a class="code" href="dtncat_8c.html#160881851a33309c0106503ac4d14d96">custody</a> = (*i)->custody() &&
<a name="l00212"></a>00212 oracle->core()->custody_accepted();
<a name="l00213"></a>00213 <span class="keywordflow">if</span> (list.add_response(cts,seq,sid,custody))
<a name="l00214"></a>00214 {
<a name="l00215"></a>00215 <span class="keyword">const</span> BundleResponseEntry* bre = list.back();
<a name="l00216"></a>00216 oracle->core()->print_log(<span class="stringliteral">"response"</span>,<a class="code" href="classprophet_1_1BundleCore.html#494b3a7c2b761b5b79873ea016ab8cc8" title="Log level.">BundleCore::LOG_DEBUG</a>,
<a name="l00217"></a>00217 <span class="stringliteral">"%s (%u) %u %u"</span>,eid.c_str(),bre->sid(),
<a name="l00218"></a>00218 bre->creation_ts(),bre->seqno());
<a name="l00219"></a>00219 }
<a name="l00220"></a>00220 }
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordflow">return</span> <span class="keyword">new</span> ResponseTLV(list);
<a name="l00224"></a>00224 }
<a name="l00225"></a>00225
<a name="l00226"></a>00226 }; <span class="comment">// struct TLVCreator</span>
<a name="l00227"></a>00227
<a name="l00228"></a>00228 }; <span class="comment">// namespace prophet</span>
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="preprocessor">#endif // _PROPHET_TLV_CREATOR_H_</span>
</pre></div></div>
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distrib
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media
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contrib-release
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